CN101994694A - Contact seal-free Roots blower - Google Patents
Contact seal-free Roots blower Download PDFInfo
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- CN101994694A CN101994694A CN 201010548918 CN201010548918A CN101994694A CN 101994694 A CN101994694 A CN 101994694A CN 201010548918 CN201010548918 CN 201010548918 CN 201010548918 A CN201010548918 A CN 201010548918A CN 101994694 A CN101994694 A CN 101994694A
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- oil
- axle sleeve
- ring
- roots blower
- oil sealing
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Abstract
The invention discloses a contact seal-free roots blower, which comprises a body of the Roots blower. An auxiliary oil tank on the left of the body is provided with a shaft hole; the left part of a driving shaft of the body passes through the auxiliary oil tank to be in clearance fit with the shaft hole; the inner side wall of the auxiliary oil tank is connected with a step oil retainer; the inner wall of the oil retainer corresponds to the shaft hole; and a step oil seal sleeve is arranged in the auxiliary oil tank and on the driving shaft, and corresponds to and in clearance fit with the oil retainer. The contact seal-free roots blower can solve the problems that the oil seal has short service life, and the structure of the oil seal is unreasonable to easily leak oil in the prior art.
Description
Technical field
The present invention relates to the industrial fan technical field, specifically a kind of contactless sealing formula roots blower.
Background technique
The tradition roots blower is when work, lubricant oil in its drop tank is lubricated the rotatable parts of driving shaft, be the spindle hole that prevents its drop tank and the leakage of oil between the driving shaft, the oil seal of being made by rubber material then be set, on spindle hole to play the effect of sealing lubricating oil.There is following shortcoming in it in the middle of reality is used: one, the rubber material temperature influence is bigger, occurs deterioration phenomenon easily, and working life is shorter, must often change; Two, driving shaft is under the effect that drags and produce the elastic failure that amount of deflection and vibration cause oil seal easily; Three, because driving shaft surface and axis hole are conplane structural type, it only seals by oil seal each other, when the lubricant oil in the drop tank is thrown on the driving shaft by disc, the lubricated oil in driving shaft surface covers, the inboard of oil seal has been assembled parts of lubricating oil simultaneously, when above-mentioned situation appearred in oil seal, the lip-deep lubricant oil of driving shaft was easy to spill by axis hole.
Thus, there is short shortcoming in working life in the oil seal form of traditional roots blower, and has the unreasonable and defective of easy leakage of oil of oil seal structure, and it is not just won the work of maintenance is wasted time and energy, and can't guarantee the proper functioning cycle of roots blower.
Summary of the invention
The purpose of this invention is to provide a kind of contactless sealing formula roots blower, it is shorter working life that it can solve the oil seal form that prior art exists, and oil seal structure is unreasonable and be easy to generate the problem of oil leakage phenomenon.
The objective of the invention is to be achieved through the following technical solutions: contactless sealing formula roots blower, it comprises the body of roots blower, offer axis hole on the drop tank of body left part, the driving shaft left part of body passes drop tank and axis hole Spielpassung, be connected with the flinger ring that is step-like on the drop tank madial wall, the flinger ring inwall is corresponding with axis hole, is step-like oil sealing axle sleeve and is arranged in the drop tank and is installed on the driving shaft oil sealing axle sleeve and Spielpassung corresponding with flinger ring.
For further realizing purpose of the present invention, also can finish by the following technical programs: the flinger ring right part is a convex ring shape, its diameter is greater than the left part diameter, and the flinger ring left part is connected with drop tank, and the oily groove that falls is in the form of a ring arranged between the bulge loop part of flinger ring right part and the drop tank madial wall; The left part of oil sealing axle sleeve is a convex ring shape, and its diameter is greater than the right part diameter, the outer wall of flinger ring right part bulge loop part and oil sealing axle sleeve left part the bulge loop corresponding and Spielpassung of inwall partly.Offer annular groove on the oil sealing sleeve lining, seal ring is installed in the annular groove, seal ring closely contacts mutually with oil sealing axle sleeve and driving shaft respectively.
The beneficial effect that the present invention can produce: because of being connected with the flinger ring that is step-like on the drop tank madial wall, the flinger ring inwall is corresponding with axis hole, being step-like oil sealing axle sleeve is arranged in the drop tank and is installed on the driving shaft, oil sealing axle sleeve and Spielpassung corresponding with flinger ring, so, be step-like flinger ring and axis hole and have certain distance, it can stop that lubricant oil is in the inboard gathering of axis hole, fundamentally avoided the generation of oil leakage phenomenon, and, when driving shaft drives the rotation of oil sealing axle sleeve, it between oil sealing axle sleeve and the flinger ring Spielpassung form, it is not subjected to temperature in working procedure, any influence of amount of deflection and vibration, its long service life, need not safeguard, fundamentally guarantee the proper functioning cycle of roots blower;
Because of the flinger ring right part is a convex ring shape, its diameter is greater than the left part diameter, and the flinger ring left part is connected with drop tank, and the oily groove that falls is in the form of a ring arranged between the bulge loop part of flinger ring right part and the drop tank madial wall; The left part of oil sealing axle sleeve is a convex ring shape, its diameter is greater than the right part diameter, the outer wall of flinger ring right part bulge loop part and the corresponding and Spielpassung of inwall of oil sealing axle sleeve left part bulge loop part, so, it can make the lip-deep lubricant oil of driving shaft be blocked and fall in the drop tank by the oil sealing axle sleeve, and can make and throw flinger ring and the lip-deep lubricant oil of oil sealing axle sleeve and be pooled in the oily groove and fall back in the drop tank again, it has effectively avoided the gathering of lubricant oil in the axis hole inboard, has fundamentally solved the leakage of oil problem of roots blower;
Because of offering annular groove on the oil sealing sleeve lining, seal ring is installed in the annular groove, seal ring closely contacts mutually with oil sealing axle sleeve and driving shaft respectively, so it can prevent that lubricant oil from flowing through between oil sealing axle sleeve and driving shaft.
Extensive use of the present invention can produce good social, economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the partial enlarged drawing I of Fig. 1, be connected with the flinger ring 13 that is step-like on main signal drop tank 11 madial walls, be step-like oil sealing axle sleeve 3 and be arranged in the drop tank 11 and be installed on the driving shaft 2, and oil sealing axle sleeve 3 and flinger ring 13 are corresponding and the structural type of Spielpassung.
Embodiment
Contactless sealing formula roots blower of the present invention, it comprises the body 1 of roots blower, offer axis hole 12 on the drop tank 11 of body 1 left part, driving shaft 2 left parts of body 1 pass drop tank 11 and axis hole 12 Spielpassung, be connected with the flinger ring 13 that is step-like on drop tank 11 madial walls, flinger ring 13 inwalls are corresponding with axis hole 12, are step-like oil sealing axle sleeve 3 and are arranged in the drop tank 11 and are installed on the driving shaft 2 oil sealing axle sleeve 3 and flinger ring 13 corresponding and Spielpassung.Flinger ring 13 right parts are convex ring shape, and its diameter is greater than the left part diameter, and flinger ring 13 left parts are connected with drop tank 11, and the oily groove 13a that falls is in the form of a ring arranged between the bulge loop part of flinger ring 13 right parts and drop tank 11 madial walls; The left part of oil sealing axle sleeve 3 is a convex ring shape, and its diameter is greater than the right part diameter, the outer wall of flinger ring 13 right part bulge loops part and oil sealing axle sleeve 3 left part the bulge loops corresponding and Spielpassung of inwall partly.Offer annular groove on oil sealing axle sleeve 3 inwalls, seal ring 4 is installed in the annular groove, seal ring 4 closely contacts mutually with oil sealing axle sleeve 3 and driving shaft 2 respectively.
During making, process various component assemblings by above-mentioned requirements and get final product.
During working state, driving shaft 2 of the present invention drags rotation down at motor, driving shaft 2 drives 3 rotations of oil sealing axle sleeve simultaneously, lubricant oil in the drop tank 11 is thrown on flinger ring 13 and oil sealing axle sleeve 3 surfaces by disc 20, at this moment, oil sealing axle sleeve 3 has been blocked lubricant oil flowing and it is fallen back in the drop tank 11 on the driving shaft 2, and, the lip-deep lubricant oil of oil sealing axle sleeve 3 can be pooled in the oily groove 13a in real time, fall back to again in the drop tank 11 by the oily groove 13a that falls, make lubricant oil can't accumulate in flinger ring 13 and oil sealing axle sleeve 3 Spielpassung places.
Technological scheme of the present invention is not limited only to the mode of execution of present embodiment record, can also have other mode of execution to finish technological scheme of the present invention.
The technology that the present invention does not describe in detail, shape, structure partly are known technology.
Claims (3)
1. contactless sealing formula roots blower, it comprises the body (1) of roots blower, offer axis hole (12) on the drop tank (11) of body (1) left part, driving shaft (2) left part of body (1) passes drop tank (11) and axis hole (12) Spielpassung, it is characterized in that: be connected with the flinger ring (13) that is step-like on drop tank (11) madial wall, flinger ring (13) inwall is corresponding with axis hole (12), being step-like oil sealing axle sleeve (3) is arranged in the drop tank (11) and is installed on the driving shaft (2) oil sealing axle sleeve (3) and the corresponding and Spielpassung of flinger ring (13).
2. contactless sealing formula roots blower according to claim 1, it is characterized in that: flinger ring (13) right part is a convex ring shape, its diameter is greater than the left part diameter, flinger ring (13) left part is connected with drop tank (11), and the oily groove (13a) that falls is in the form of a ring arranged between the bulge loop part of flinger ring (13) right part and drop tank (11) madial wall; The left part of oil sealing axle sleeve (3) is a convex ring shape, and its diameter is greater than the right part diameter, the outer wall of flinger ring (13) right part bulge loop part and oil sealing axle sleeve (3) left part the bulge loop corresponding and Spielpassung of inwall partly.
3. contactless sealing formula roots blower according to claim 1, it is characterized in that: offer annular groove on oil sealing axle sleeve (3) inwall, seal ring (4) is installed in the annular groove, and seal ring (4) closely contacts mutually with oil sealing axle sleeve (3) and driving shaft (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105489181A CN101994694B (en) | 2010-11-18 | 2010-11-18 | Contact seal-free Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105489181A CN101994694B (en) | 2010-11-18 | 2010-11-18 | Contact seal-free Roots blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101994694A true CN101994694A (en) | 2011-03-30 |
| CN101994694B CN101994694B (en) | 2012-05-30 |
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ID=43785294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105489181A Active CN101994694B (en) | 2010-11-18 | 2010-11-18 | Contact seal-free Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101994694B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276084Y (en) * | 1996-02-29 | 1998-03-11 | 长沙鼓风机厂 | Negative pressure Roots blower |
| CN2830713Y (en) * | 2005-07-19 | 2006-10-25 | 长沙鼓风机厂有限责任公司 | Large Roots blower |
| US7488164B2 (en) * | 2005-05-23 | 2009-02-10 | Eaton Corporation | Optimized helix angle rotors for Roots-style supercharger |
| CN201858149U (en) * | 2010-11-18 | 2011-06-08 | 山东章晃机械工业有限公司 | Non-contact seal type Roots fan |
-
2010
- 2010-11-18 CN CN2010105489181A patent/CN101994694B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276084Y (en) * | 1996-02-29 | 1998-03-11 | 长沙鼓风机厂 | Negative pressure Roots blower |
| US7488164B2 (en) * | 2005-05-23 | 2009-02-10 | Eaton Corporation | Optimized helix angle rotors for Roots-style supercharger |
| CN2830713Y (en) * | 2005-07-19 | 2006-10-25 | 长沙鼓风机厂有限责任公司 | Large Roots blower |
| CN201858149U (en) * | 2010-11-18 | 2011-06-08 | 山东章晃机械工业有限公司 | Non-contact seal type Roots fan |
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| Publication number | Publication date |
|---|---|
| CN101994694B (en) | 2012-05-30 |
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